AP® Physics 1 & 2

Center of Mass (CoM): Dumbbells

APPH12-9@CGKR

For the three dumbbells shown below, the rod connecting them has a negligible mass and has a length of $d$. The spheres shown in Dumbbell 1 and Dumbbell 2 have a uniform density of $ \rho$ and the spheres in Dumbbell 3 have a density of $2\rho$.

For which dumbbell is the center of mass furthest to the left?

J. Krehbiel. Created for Albert.io. Copyright 2016. All rights reserved.

A

Dumbbell 1

B

Dumbbell 2

C

Dumbbell 3

D

The location of the center of mass is the same for all three dumbbells.